You don't need a kit for the gorilla knob arrangement. Just replace the plugs, and instead of using the original resistor wires/insulators to connect one plug to the next, make some jumpers with eye connectors to connect one plug to the next. Connect the power to the first plug and make sure you leave the old ground wire disconnected, the new plugs are grounded through their bodies.

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1985 300TD-euro 352,000 mi
1974 240D (1?)52,000 mi - has a new home now